| 摘要 |
<P>PROBLEM TO BE SOLVED: To recover a large amount of excavation muck and muddy water generated in excavation construction and to surely transfer them without leaving them on the site. <P>SOLUTION: An accumulation device 1 accumulates the excavation muck generated in the excavation construction utilizing a down-the-hole hammer, and also accumulates the muddy water when the muddy water is discharged. The accumulation device includes an insertion hole 11 to which a casing that follows the down-the-hole hammer can be inserted, a circular container 13 for tentatively storing the excavation muck, and stagnation prevention means for preventing stagnation of the excavation muck by moving around inside the container. The stagnation prevention means includes a ring gear 31 whose rotation center is a center of the circular container 13, and an agitation member 35 provided so as to be rotated integrally with the gear and be inscribed in the circular container. By using the accumulation device in the excavation construction, even when rapidly executing excavation by the down-the-hole hammer in a river or a dam lake or the like, a large amount of the excavation muck and the muddy water are smoothly accumulated/transferred, and construction in consideration of a surrounding natural environment is performed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
